Three-rings And Medium-speed Micro-powder Grinding Mill(ce)

HGM series of Three-Ring & Medium-Speed MicroPowder Grinder is a new kind of micro-powder
processing equipment, which is invented through more than twenty times
experiments and improvements, and based on twenty years of mill manufacture experience
while absorbing advanced international machine manufacture techniques. HGM
series of Three-Ring & Medium-Speed MicroPowder Grinder is mainly used in processing
non-inflammable, non-explosive, brittle material with hardness below six
mohs, such as calcite, chalk, limestone, dolomite, kaolin, bentonite, talc, mica,
magnesite, pyrophillite, ceyssatite, barite, gypsum, alunite, granite, fluorite,
phosphate rock, kalium ore, float stone, more than 200 kinds of materials. 
Working Principle:The motor drives the main shaft and every turnplate through the
reducer. The reducer drives dozens of rollers to rotate against race way of ring
through pin. Small materials crushed by hammer crusher is transported into hopper
by elevator, and then vibrating feeder shall feed material to the central part
of upper turnplate evenly. The material falls to circle under the centrifugal
force and comes down to raceway of ring to be crushed into powder. After grinded
in the first race way, the material goes to the second and third turnplate. The
blower inhales the external air into the mill and carries the powder after third
turnplate into powder-separator. Turbine in the separator makes the coarse powder
drop down and regrinded and the fine powder shall go into cyclone powder collector
together with air current and go down through discharge valve as final product;
at the same time, air current with a little dusts goes out through blower
and muffler after purified by filter.
Capabilities and Characteristics:Three-Ring & Medium-Speed MicroPowder Mill has high
efficiency and low cost. Its capacity is raised by 40% compared with airflow
mill and mix mill on the condition that the materials, the drive and the fineness
of the final powder are the same. The life span of tear & wear parts is more
than that of straight impact crusher and turbine mill under the circumstance of
same materials and fineness of the final powder. Usually, its life span is more
than one year. There is no rolling bearing and screw in the grinding cavity, so
as to avoid the damage to the machine caused by tear & wear of bearing and seals
and the looseness of screws.